It was just three years ago that Musicians Making A Difference launched its #MMAD4U Day and for the 2017 edition things are getting even bigger and brighter.

Since its conception, the campaign has reached over 1.5 million Australians and supports young people who have dealt with trauma. The day's ethos lies in the idea that even something as simple as a social media call out can reassure people that there is someone that believes in them.

This Friday, social media will be awash with support for young people. MMAD have amassed has a huge group of Australian and international supporters including Niall Horan, Bishop Briggs, Billie Eilish, Vera Blue, Dean Lewis and a heap more.

"People underestimate the power of positive encouragement and the potential it has to transform a life," says MMAD CEO and founder Dominic Brook.

"On Friday December 1, reach out to that person in your life who may need to hear it. We are asking everyone to help raise awareness by posting an image with '#MMAD4U' and tag them in your post because every young person deserves someone who believes in them and the opportunity to live their potential."

In addition to the big day, every year MMAD chooses ten young people from their Rising Stars program to work with mentors from Universal Music Australia and produce a single. This year's single is called Headstrong and all proceeds from the single go to the MMAD charity.

You can check out #MMAD4U Day's supporting musicians shout out below.

Dean Lewis + Samsaruh + Jack Gray
Factory Theatre, Marrickville
Dean Lewis
The Zoo, Fortitude Valley
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Dean Lewis
The Northern, Byron Bay
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Lost Paradise 2017 feat.
Glenworth Valley, Glenworth Valley
Beyond the Valley 2017 feat.
Lardner Park, Lardner
NYE in the Park 2017 feat.
Victoria Park, Camperdown
Australian Open 2018 Feat.
Birrarung Marr, Melbourne
Niall Horan
Brisbane Entertainment Centre, Boondall
Niall Horan
Qudos Bank Arena, Sydney Olympic Park
Niall Horan
Margaret Court Arena, Melbourne